ceph/src/boost/libs/compute/perf/perf_fill.cpp

   1 //---------------------------------------------------------------------------//
   2 // Copyright (c) 2013-2014 Kyle Lutz <kyle.r.lutz@gmail.com>
   3 //
   4 // Distributed under the Boost Software License, Version 1.0
   5 // See accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt
   7 //
   8 // See http://boostorg.github.com/compute for more information.
   9 //---------------------------------------------------------------------------//
  10
  11 #include <iostream>
  12
  13 #include <boost/compute/system.hpp>
  14 #include <boost/compute/algorithm/fill.hpp>
  15 #include <boost/compute/container/vector.hpp>
  16
  17 #include "perf.hpp"
  18
  19 int main(int argc, char *argv[])
  20 {
  21     perf_parse_args(argc, argv);
  22     std::cout << "size: " << PERF_N << std::endl;
  23
  24     // setup context and queue for the default device
  25     boost::compute::device device = boost::compute::system::default_device();
  26     boost::compute::context context(device);
  27     boost::compute::command_queue queue(context, device);
  28     std::cout << "device: " << device.name() << std::endl;
  29
  30     // create vector on the device (filled with zeros)
  31     boost::compute::vector<int> vec(PERF_N, 0, queue);
  32
  33     perf_timer t;
  34     for(size_t trial = 0; trial < PERF_TRIALS; trial++){
  35         t.start();
  36         boost::compute::fill(vec.begin(), vec.end(), int(trial), queue);
  37         queue.finish();
  38         t.stop();
  39     }
  40     std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl;
  41
  42     return 0;
  43 }